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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Definitions of the Internet Protocol. | |
7 | * | |
8 | * Version: @(#)in.h 1.0.1 04/21/93 | |
9 | * | |
10 | * Authors: Original taken from the GNU Project <netinet/in.h> file. | |
11 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License | |
15 | * as published by the Free Software Foundation; either version | |
16 | * 2 of the License, or (at your option) any later version. | |
17 | */ | |
18 | #ifndef _LINUX_IN_H | |
19 | #define _LINUX_IN_H | |
20 | ||
21 | #include <linux/types.h> | |
22 | #include <linux/socket.h> | |
23 | ||
24 | /* Standard well-defined IP protocols. */ | |
25 | enum { | |
26 | IPPROTO_IP = 0, /* Dummy protocol for TCP */ | |
27 | IPPROTO_ICMP = 1, /* Internet Control Message Protocol */ | |
28 | IPPROTO_IGMP = 2, /* Internet Group Management Protocol */ | |
29 | IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94) */ | |
30 | IPPROTO_TCP = 6, /* Transmission Control Protocol */ | |
31 | IPPROTO_EGP = 8, /* Exterior Gateway Protocol */ | |
32 | IPPROTO_PUP = 12, /* PUP protocol */ | |
33 | IPPROTO_UDP = 17, /* User Datagram Protocol */ | |
34 | IPPROTO_IDP = 22, /* XNS IDP protocol */ | |
35 | IPPROTO_RSVP = 46, /* RSVP protocol */ | |
36 | IPPROTO_GRE = 47, /* Cisco GRE tunnels (rfc 1701,1702) */ | |
37 | ||
38 | IPPROTO_IPV6 = 41, /* IPv6-in-IPv4 tunnelling */ | |
39 | ||
40 | IPPROTO_ESP = 50, /* Encapsulation Security Payload protocol */ | |
41 | IPPROTO_AH = 51, /* Authentication Header protocol */ | |
42 | IPPROTO_PIM = 103, /* Protocol Independent Multicast */ | |
43 | ||
44 | IPPROTO_COMP = 108, /* Compression Header protocol */ | |
45 | IPPROTO_SCTP = 132, /* Stream Control Transport Protocol */ | |
46 | ||
47 | IPPROTO_RAW = 255, /* Raw IP packets */ | |
48 | IPPROTO_MAX | |
49 | }; | |
50 | ||
51 | ||
52 | /* Internet address. */ | |
53 | struct in_addr { | |
54 | __u32 s_addr; | |
55 | }; | |
56 | ||
57 | #define IP_TOS 1 | |
58 | #define IP_TTL 2 | |
59 | #define IP_HDRINCL 3 | |
60 | #define IP_OPTIONS 4 | |
61 | #define IP_ROUTER_ALERT 5 | |
62 | #define IP_RECVOPTS 6 | |
63 | #define IP_RETOPTS 7 | |
64 | #define IP_PKTINFO 8 | |
65 | #define IP_PKTOPTIONS 9 | |
66 | #define IP_MTU_DISCOVER 10 | |
67 | #define IP_RECVERR 11 | |
68 | #define IP_RECVTTL 12 | |
69 | #define IP_RECVTOS 13 | |
70 | #define IP_MTU 14 | |
71 | #define IP_FREEBIND 15 | |
72 | #define IP_IPSEC_POLICY 16 | |
73 | #define IP_XFRM_POLICY 17 | |
74 | ||
75 | /* BSD compatibility */ | |
76 | #define IP_RECVRETOPTS IP_RETOPTS | |
77 | ||
78 | /* IP_MTU_DISCOVER values */ | |
79 | #define IP_PMTUDISC_DONT 0 /* Never send DF frames */ | |
80 | #define IP_PMTUDISC_WANT 1 /* Use per route hints */ | |
81 | #define IP_PMTUDISC_DO 2 /* Always DF */ | |
82 | ||
83 | #define IP_MULTICAST_IF 32 | |
84 | #define IP_MULTICAST_TTL 33 | |
85 | #define IP_MULTICAST_LOOP 34 | |
86 | #define IP_ADD_MEMBERSHIP 35 | |
87 | #define IP_DROP_MEMBERSHIP 36 | |
88 | #define IP_UNBLOCK_SOURCE 37 | |
89 | #define IP_BLOCK_SOURCE 38 | |
90 | #define IP_ADD_SOURCE_MEMBERSHIP 39 | |
91 | #define IP_DROP_SOURCE_MEMBERSHIP 40 | |
92 | #define IP_MSFILTER 41 | |
93 | #define MCAST_JOIN_GROUP 42 | |
94 | #define MCAST_BLOCK_SOURCE 43 | |
95 | #define MCAST_UNBLOCK_SOURCE 44 | |
96 | #define MCAST_LEAVE_GROUP 45 | |
97 | #define MCAST_JOIN_SOURCE_GROUP 46 | |
98 | #define MCAST_LEAVE_SOURCE_GROUP 47 | |
99 | #define MCAST_MSFILTER 48 | |
100 | ||
101 | #define MCAST_EXCLUDE 0 | |
102 | #define MCAST_INCLUDE 1 | |
103 | ||
104 | /* These need to appear somewhere around here */ | |
105 | #define IP_DEFAULT_MULTICAST_TTL 1 | |
106 | #define IP_DEFAULT_MULTICAST_LOOP 1 | |
107 | ||
108 | /* Request struct for multicast socket ops */ | |
109 | ||
110 | struct ip_mreq | |
111 | { | |
112 | struct in_addr imr_multiaddr; /* IP multicast address of group */ | |
113 | struct in_addr imr_interface; /* local IP address of interface */ | |
114 | }; | |
115 | ||
116 | struct ip_mreqn | |
117 | { | |
118 | struct in_addr imr_multiaddr; /* IP multicast address of group */ | |
119 | struct in_addr imr_address; /* local IP address of interface */ | |
120 | int imr_ifindex; /* Interface index */ | |
121 | }; | |
122 | ||
123 | struct ip_mreq_source { | |
124 | __u32 imr_multiaddr; | |
125 | __u32 imr_interface; | |
126 | __u32 imr_sourceaddr; | |
127 | }; | |
128 | ||
129 | struct ip_msfilter { | |
130 | __u32 imsf_multiaddr; | |
131 | __u32 imsf_interface; | |
132 | __u32 imsf_fmode; | |
133 | __u32 imsf_numsrc; | |
134 | __u32 imsf_slist[1]; | |
135 | }; | |
136 | ||
137 | #define IP_MSFILTER_SIZE(numsrc) \ | |
138 | (sizeof(struct ip_msfilter) - sizeof(__u32) \ | |
139 | + (numsrc) * sizeof(__u32)) | |
140 | ||
141 | struct group_req | |
142 | { | |
143 | __u32 gr_interface; /* interface index */ | |
144 | struct __kernel_sockaddr_storage gr_group; /* group address */ | |
145 | }; | |
146 | ||
147 | struct group_source_req | |
148 | { | |
149 | __u32 gsr_interface; /* interface index */ | |
150 | struct __kernel_sockaddr_storage gsr_group; /* group address */ | |
151 | struct __kernel_sockaddr_storage gsr_source; /* source address */ | |
152 | }; | |
153 | ||
154 | struct group_filter | |
155 | { | |
156 | __u32 gf_interface; /* interface index */ | |
157 | struct __kernel_sockaddr_storage gf_group; /* multicast address */ | |
158 | __u32 gf_fmode; /* filter mode */ | |
159 | __u32 gf_numsrc; /* number of sources */ | |
160 | struct __kernel_sockaddr_storage gf_slist[1]; /* interface index */ | |
161 | }; | |
162 | ||
163 | #define GROUP_FILTER_SIZE(numsrc) \ | |
164 | (sizeof(struct group_filter) - sizeof(struct __kernel_sockaddr_storage) \ | |
165 | + (numsrc) * sizeof(struct __kernel_sockaddr_storage)) | |
166 | ||
167 | struct in_pktinfo | |
168 | { | |
169 | int ipi_ifindex; | |
170 | struct in_addr ipi_spec_dst; | |
171 | struct in_addr ipi_addr; | |
172 | }; | |
173 | ||
174 | /* Structure describing an Internet (IP) socket address. */ | |
175 | #define __SOCK_SIZE__ 16 /* sizeof(struct sockaddr) */ | |
176 | struct sockaddr_in { | |
177 | sa_family_t sin_family; /* Address family */ | |
178 | unsigned short int sin_port; /* Port number */ | |
179 | struct in_addr sin_addr; /* Internet address */ | |
180 | ||
181 | /* Pad to size of `struct sockaddr'. */ | |
182 | unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) - | |
183 | sizeof(unsigned short int) - sizeof(struct in_addr)]; | |
184 | }; | |
185 | #define sin_zero __pad /* for BSD UNIX comp. -FvK */ | |
186 | ||
187 | ||
188 | /* | |
189 | * Definitions of the bits in an Internet address integer. | |
190 | * On subnets, host and network parts are found according | |
191 | * to the subnet mask, not these masks. | |
192 | */ | |
193 | #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0) | |
194 | #define IN_CLASSA_NET 0xff000000 | |
195 | #define IN_CLASSA_NSHIFT 24 | |
196 | #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET) | |
197 | #define IN_CLASSA_MAX 128 | |
198 | ||
199 | #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000) | |
200 | #define IN_CLASSB_NET 0xffff0000 | |
201 | #define IN_CLASSB_NSHIFT 16 | |
202 | #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET) | |
203 | #define IN_CLASSB_MAX 65536 | |
204 | ||
205 | #define IN_CLASSC(a) ((((long int) (a)) & 0xe0000000) == 0xc0000000) | |
206 | #define IN_CLASSC_NET 0xffffff00 | |
207 | #define IN_CLASSC_NSHIFT 8 | |
208 | #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET) | |
209 | ||
210 | #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000) | |
211 | #define IN_MULTICAST(a) IN_CLASSD(a) | |
212 | #define IN_MULTICAST_NET 0xF0000000 | |
213 | ||
214 | #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000) | |
215 | #define IN_BADCLASS(a) IN_EXPERIMENTAL((a)) | |
216 | ||
217 | /* Address to accept any incoming messages. */ | |
218 | #define INADDR_ANY ((unsigned long int) 0x00000000) | |
219 | ||
220 | /* Address to send to all hosts. */ | |
221 | #define INADDR_BROADCAST ((unsigned long int) 0xffffffff) | |
222 | ||
223 | /* Address indicating an error return. */ | |
224 | #define INADDR_NONE ((unsigned long int) 0xffffffff) | |
225 | ||
226 | /* Network number for local host loopback. */ | |
227 | #define IN_LOOPBACKNET 127 | |
228 | ||
229 | /* Address to loopback in software to local host. */ | |
230 | #define INADDR_LOOPBACK 0x7f000001 /* 127.0.0.1 */ | |
231 | #define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000) | |
232 | ||
233 | /* Defines for Multicast INADDR */ | |
234 | #define INADDR_UNSPEC_GROUP 0xe0000000U /* 224.0.0.0 */ | |
235 | #define INADDR_ALLHOSTS_GROUP 0xe0000001U /* 224.0.0.1 */ | |
236 | #define INADDR_ALLRTRS_GROUP 0xe0000002U /* 224.0.0.2 */ | |
237 | #define INADDR_MAX_LOCAL_GROUP 0xe00000ffU /* 224.0.0.255 */ | |
238 | ||
239 | ||
240 | /* <asm/byteorder.h> contains the htonl type stuff.. */ | |
241 | #include <asm/byteorder.h> | |
242 | ||
243 | #ifdef __KERNEL__ | |
244 | /* Some random defines to make it easier in the kernel.. */ | |
245 | #define LOOPBACK(x) (((x) & htonl(0xff000000)) == htonl(0x7f000000)) | |
246 | #define MULTICAST(x) (((x) & htonl(0xf0000000)) == htonl(0xe0000000)) | |
247 | #define BADCLASS(x) (((x) & htonl(0xf0000000)) == htonl(0xf0000000)) | |
248 | #define ZERONET(x) (((x) & htonl(0xff000000)) == htonl(0x00000000)) | |
249 | #define LOCAL_MCAST(x) (((x) & htonl(0xFFFFFF00)) == htonl(0xE0000000)) | |
250 | ||
251 | #endif | |
252 | ||
253 | #endif /* _LINUX_IN_H */ |